1 /*

     2  * Copyright (C) 2009 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

    14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    24  */

    25 

    26 #ifndef JSZombie_h

    27 #define JSZombie_h

    28 

    29 #include "JSCell.h"

    30 

    31 #if ENABLE(JSC_ZOMBIES)

    32 namespace JSC {

    33 

    34 class JSZombie : public JSCell {

    35 public:

    36     JSZombie(const ClassInfo* oldInfo, Structure* structure)

    37         : JSCell(structure)

    38         , m_oldInfo(oldInfo)

    39     {

    40     }

    41     virtual bool isZombie() const { return true; }

    42     virtual const ClassInfo* classInfo() const { return &s_info; }

    43     static Structure* leakedZombieStructure();

    44 

    45     virtual bool isGetterSetter() const { ASSERT_NOT_REACHED(); return false; }

    46     virtual bool isAPIValueWrapper() const { ASSERT_NOT_REACHED(); return false; }

    47     virtual bool isPropertyNameIterator() const { ASSERT_NOT_REACHED(); return false; }

    48     virtual CallType getCallData(CallData&) { ASSERT_NOT_REACHED(); return CallTypeNone; }

    49     virtual ConstructType getConstructData(ConstructData&) { ASSERT_NOT_REACHED(); return ConstructTypeNone; }

    50     virtual bool getUInt32(uint32_t&) const { ASSERT_NOT_REACHED(); return false; }

    51     virtual JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const { ASSERT_NOT_REACHED(); return jsNull(); }

    52     virtual bool getPrimitiveNumber(ExecState*, double&, JSValue&) { ASSERT_NOT_REACHED(); return false; }

    53     virtual bool toBoolean(ExecState*) const { ASSERT_NOT_REACHED(); return false; }

    54     virtual double toNumber(ExecState*) const { ASSERT_NOT_REACHED(); return 0.0; }

    55     virtual UString toString(ExecState*) const { ASSERT_NOT_REACHED(); return ""; }

    56     virtual JSObject* toObject(ExecState*) const { ASSERT_NOT_REACHED(); return 0; }

    57     virtual void markChildren(MarkStack&) { ASSERT_NOT_REACHED(); }

    58     virtual void put(ExecState*, const Identifier&, JSValue, PutPropertySlot&) { ASSERT_NOT_REACHED(); }

    59     virtual void put(ExecState*, unsigned, JSValue) { ASSERT_NOT_REACHED(); }

    60     virtual bool deleteProperty(ExecState*, const Identifier&) { ASSERT_NOT_REACHED(); return false; }

    61     virtual bool deleteProperty(ExecState*, unsigned) { ASSERT_NOT_REACHED(); return false; }

    62     virtual JSObject* toThisObject(ExecState*) const { ASSERT_NOT_REACHED(); return 0; }

    63     virtual JSValue getJSNumber() { ASSERT_NOT_REACHED(); return jsNull(); }

    64     virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&) { ASSERT_NOT_REACHED(); return false; }

    65     virtual bool getOwnPropertySlot(ExecState*, unsigned, PropertySlot&) { ASSERT_NOT_REACHED(); return false; }

    66     

    67     static const ClassInfo s_info;

    68 private:

    69     const ClassInfo* m_oldInfo;

    70 };

    71 

    72 }

    73 

    74 #endif // ENABLE(JSC_ZOMBIES)

    75 

    76 #endif // JSZombie_h